K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2013-11-20T08:45:26.428314Z
K 7
svn:log
V 356
Revert back to use int for the page counts.  In vn_io_fault(), the i/o
is chunked to pieces limited by integer io_hold_cnt tunable, while
vm_fault_quick_hold_pages() takes integer max_count as the upper bound.

Rearrange the checks to correctly handle overflowing address arithmetic.

Submitted by:	bde
Tested by:	pho
Discussed with:	alc
MFC after:	1 week

END